body {
  background-image: url('../img/loginback.gif');
  background-position: initial initial;
  background-repeat: initial initial;
  background-size: 100%;
  margin: 0px;
  padding: 0px;
}
.bu{
	margin-left: 7em;
}
.form-horizontal{
	border: 2px solid black;
	padding: 5em 5em 5em 2em;
	margin-top: 5em;
	background-color: white;
	color: black;
}
.btn{
	padding: 0;
}
.zc{
	text-decoration: none;
	color:black;
	display: block;
	width:55px;
	height:35px;
	line-height: 35px;
}
.zc:hover{
	text-decoration: none;
	color: black;
}
.zc:visited{
	text-decoration: none;
}
.zc:active{
	text-decoration: none;
}
.zc:link{
	text-decoration: none;
}
@media screen and (max-width:1250px){
	.form-horizontal{
		padding: 3em 2em 3em 5em;
		.control-label{
			width:60px;
		}
	}	
}
@media screen and (max-width:768px){
	.checkbox{
		margin-left: -1.3em;
	}
	.butn{
		margin-left: -.1em;
	}
}